def test_remove_at_out_of_bounds(self):
"""
Tests for return of None when called on index that is out of bounds
"""
l = LinkedList()
l.insert_first("a")
l.remove_at(1)
self.assertEqual(l.remove_at(1), None)
def test_remove_at_given_index(self):
"""
Tests for removal of node at given index
"""
l = LinkedList()
l.insert_last(1)
l.insert_last(2)
l.insert_last(3)
l.insert_last(4)
self.assertEqual(l.get_at(1).data, 2)
l.remove_at(1)
self.assertEqual(l.get_at(1).data, 3)
def test_remove_at_first_node(self):
"""
Tests removal of first node
"""
l = LinkedList()
l.insert_last(1)
l.insert_last(2)
l.insert_last(3)
l.insert_last(4)
self.assertEqual(l.get_at(0).data, 1)
l.remove_at(0)
self.assertEqual(l.get_at(0).data, 2)